Cultivation Of Crops: Bacterial Black spot

Pests and Disease Management in Mango

Anthracnose

Colletotrichum gleosporioides

Symptoms	Cause	Comments	Management
Small and dark spot on flowers, Sunken lesions on fruit, fruits dropping from tree before ripe	Fungus	Disease favoured by wet conditions	Appropriate fungicide should be applied during flowering and fruit development

Powdery mildew

Odium Magniferae

Symptoms	Cause	Comments	Management
Gray/White powdery growth on leaves, flowers or fruits	Fungus	Found in all mango growing regions	Appropriate fungicide recommended, chemical sprays only need to be applied at flowering and fruit set

Algal leaf spot

Cephaleuros Virescens

Symptoms	Cause	Comments	Management
Rusty spots ( Orange color ) on both upper and lower leaf surfaces which may coalesce to form large irregularly shaped patches	Alage	Disease affects many fruits in the tropics, infection is unsightly but often harmless	Remove all weeds around the tree, proper pruning is required, badly infested tree can be treated with copper containing fungicides

Pink disease

Erythricium salmonicolor

Symptoms	Cause	Comments	Management
White threads at forks of branches which coalesce to form a pink crust during wet conditions	Fungus	Pink disease is a destructive disease of mango grown in the wet tropics	Appropriate fungicide recommended

Bacterial Black Spot ( Bacterial Canker )

Xanthomonas campestris

Symptoms	Cause	Comments	Management
Black cankerous lesions on stems which crack and exude a gummy substance, fruit dropping from plants	Bacterium	This is found in most tropical and subtropical areas where mango is grown	Prune out infected twigs, protective sprays of copper during wet weather helps to protect plant from the disease

Mango Tree Borer

Batocera rufomaculata

Symptoms	Cause	Comments	Management
Circular holes in the bark, tree borers feed on the barke of twigs and chew green growing tips	Insect	Female tree borers lay their eggs in incision made in damaged mango bark, larvae feed on wood and pupate within the tree	Appropriate Insecticide recommended.